• 디지털콘텐츠학회 논문지
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• 제2권1호
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• pp.81-91
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• 2001

국가 경쟁력을 강화하고 국내의 IT수요에 효과적으로 대처하기 위하여 인터넷 활용의 기반이 되는 웹 인터페이스 디자인에 대한 인식을 정립할 필요가 있다. 짧은 인터넷 역사와 인터넷 환경의 급격한 변화로 웹 인터페이스 디자인의 기준이 정립되지 못하였을 뿐 아니라 이를 평가할 수 있는 기준과 도구가 구비되지 않아 웹사이트의 양적인 성장에도 불구하고 사용자가 보다. 높은 양질의 웹사이트를 선택할 수 있는 근거가 마련되지 못하고 있는 실정이다. 따라서 본 연구에서는 웹 그래픽 인터페이스의 시지각에 대한 평가방안을 분석하여 개발된 평가기준에 의한 웹의 질적인 제고를 통하여 사용자에게 양질의 웹 서비스가 제공되도록 평가모델을 개발하였고 설문을 통해 개발된 평가모델의 유용성을 검증하였다. 이를 통해 새로운 인터넷 문화를 조성하고 바람직한 웹 디자인의 평가모델을 개발하는데 기여하도록 하였다.

• 한국농공학회논문집
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• 제64권1호
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• pp.91-98
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• 2022

Multi-layered geotextile tubes may have problems on its stability when used as cofferdam. This study presents the shear strength characteristics at the interface between geotextiles and a cementitious binder material to improve the stability of the multi-layered geotextile tubes. In this study, two different types of geotextiles are used. After mixing with a rapid setting cement, fly ash, sand, accelerator, and water, the cementitious binder material is prepared at the interface between two geotextile samples and cured under water for a desired period. The specimen is placed on upper and lower direct shear boxes by using clamping systems. A series of direct shear tests for two different geotextiles are performed along the curing time under three vertical stresses. Experimental results show that the shear strength at the interface between the cementitious binder material and geotextiles is greater than that at the interface between two geotextiles. For two types of geotextiles, apparent cohesion occurs at the interface between the cementitious binder material and geotextiles. In addition, the friction angles for any curing time are improved, compared to the interface between two geotextiles. The cementitious binder material suggested for the interface between two geotextiles may be useful for the reinforcement of multi-layered geotextile tubes.

• 대한인간공학회:학술대회논문집
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• 대한인간공학회 1997년도 추계학술대회논문집
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• pp.249-259
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• 1997

As the gap between competing products narrows in terms of performance and quality, the product usability is rapidly becoming a new dimension of product design as the key to offering distinctive value to the customer. Because the user interface is important, not only for the user but also for the efficiency of te whole organiation, system designers require increasingly precise evaluation methods to determine how effective and usable human-product interface is. In this study a new methodology named usability analysis diagram(UAD), for evaluating usability of human-product interface systematically, was developed. UAD is a top-down flow diaagram of a human-product interaction, in ehichfour basic elements - perception, understanding, intellectual decision and action - were classified and then represented by a particular symbol for each. The usability of the product is assessed by the frequency of each symbol in a diagram which represents a sequence of cognitive and physical activities of users during the use of the product, and by the level of difficulty that is classif- ied in three levels in terms of easiness of perception, understanding and action. In order to test validity of the proposed UAD in a real situation, a case study was performed on two different cameras, automatic and manual, and their usability was successfully evaluated and compared.

• Imaging Science in Dentistry
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• 제49권2호
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• pp.171-176
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• 2019

The available methods for veneer evaluation are limited to clinical and radiographic examinations, which may not allow the appropriate identification of failure. In this report, we demonstrate the use of optical coherence tomography (OCT) as a noninvasive diagnostic and follow-up method to evaluate gingival recovery and the adhesive interface in aesthetic oral rehabilitation involving periodontal plastic surgery and ceramic laminate veneers. OCT was efficient for evaluating both soft and hard tissues, as well as the quality of the adhesive interface. In conclusion, OCT was found to be a promising approach for the professional evaluation of aesthetic oral rehabilitation, as it was capable of generating images that enabled the analysis of gingival recovery and the adhesive interface.

• 한국공간구조학회논문집
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• 제21권3호
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• pp.35-42
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• 2021

An experimental study was carried out to evaluate the shear performance at the interface composed of structural laminates and concrete. The main variables are the number of CLT layers and the shape of the shear connector. The number of CLT layers consisted of 3 and 5 layers. A total of 6 test specimens for shear performance evaluation were prepared in the form of a shear connector, a direct screw type and a vertically embedded type. As a result of the experiment, similar behavior was shown in all specimens, regardless of the number of layers, including direct screw type (SC series) and vertically embedded type (VE series). The behavior at the joint surface was damaged due to the occurrence of initial shear cracks, expansion of shear groove cracks, and splaying at the interface after the maximum load.After the maximum load, the shear strength decreased gradually due to the effect of the shear connector. It can be seen that the shear strength of all specimens is determined by shear and compression stress failure of concrete at the interface of the notch joint.

• 한국기록관리학회지
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• 제10권2호
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• pp.147-170
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• 2010

본 연구에서는 해외 국가 웹 아카이빙 사례들을 인터페이스 유형 및 특성들을 항목별로 분석하고 살펴보았다. 이를 위하여 다섯 개의 인터페이스 영역과 열네 개의 평가 항목을 선정하였으며, 해외사례 및 국내 OASIS를 대조하여 분석한 결과, 국내의 경우에는 검색 인터페이스 및 지원기능 인터페이스 영역에의 보강이 필요함을 확인하였다. 또한 해외 사례의 참조를 통하여 국내의 경우 수집 대상 웹 콘텐츠 주제 영역의 다양화, 웹 자원 수집의 분담화, 특별 컬렉션의 구성, 아카이빙 시점 및 흐름의 시각화, 체계적인 아카이빙 전략 수행, 그리고 국제기구와의 적극적 협력 등이 강화되어야 함을 확인하였다.

• 스마트미디어저널
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• 제9권4호
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• pp.73-80
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• 2020

With the advent of the Internet era, consumer lifestyles have been changed tremendously, and mobile payment has carried out an increasingly extensive coverage of the people's life trajectory. Taking the design of the mobile payment interface as an example, we use a conjoint analysis method to survey college students in Guangxi, where questionnaires are collected from 270 people in different groups according to gender. The method separates the attributes that affect consumer choice of mobile payment interface design and the utility value of the attribute level to analyze consumer needs and preferences, and then obtains consumers' potential evaluation criteria for mobile payment interface design. The results of the study show that the attributes that influence consumers' choice of mobile payment interface design are, in order of preference: page layout, identification convenience, verification, module distribution, entertainment, and information encryption. Consumer groups of different genders show differences in their preferences in the mobile payment interface design and Consumer needs reflect consumer psychology. Several findings are obtained on the consumers' preferences on the mobile payment interface design, which may be used to improve future design processes.

• 해양환경안전학회지
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• 제27권2호
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• pp.266-274
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• 2021

해기사의 과도한 직무스트레스는 신체적, 정신적으로 부정적인 영향을 미치며, 이로 인한 이직은 원활한 해기인력 수급에 영향을 미칠 수 있다. 본 연구에서는 해기사의 체계적인 직무스트레스 측정 및 관리를 위한 도구로써 모바일 웹 애플리케이션을 개발하고 품질평가를 통하여 검증하였다. 애플리케이션의 개발은 전통적인 소프트웨어 개발 방식인 Waterfall 모델에 따라 수행되었다. 요구분석 단계에서는 현직 해기사 및 해상직원 인사담당자 각 5명을 대상으로 Brain Storming을 실시하고 그 결과를 설계에 반영하였다. 설계 및 개발 단계에서는 요구사항 분석 결과를 바탕으로 애플리케이션을 설계하고, JSP와 Spring Framework를 활용하여 기능을 구현하였다. 애플리케이션의 작동 Test를 수행한 결과 사용자 인터페이스에서 입력한 직무스트레스, 정신건강, 진로적응성 등 입력 데이터에 따른 정상적인 출력 결과가 도시되었으며, 관리자 인터페이스에도 응답자의 입력 결과가 정상적으로 도시되고, 데이터베이스로 구성됨을 확인하였다. 요구사항 분석 참여 집단을 대상으로 ISO/IEC 9126-2 메트릭 기반의 5점 척도 품질평가를 시행한 결과 사용자 인터페이스 4.70점, 관리자 인터페이스 4.72점으로 유의한 결과가 도출되었다. 본 연구를 통해 개발한 애플리케이션은 사용자 요구를 반영한 지속적인 개정 및 보완이 필요하며, 향후 수집된 Data의 분석 및 활용을 위한 시스템 구축에 관한 연구가 필요하다.

• Tribology and Lubricants
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• 제29권6호
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• pp.392-396
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• 2013

Biodiesel fuels contain unsaturated fatty acid ester, which can easily oxidize, especially when exposed to ultraviolet light. The products formed by this oxidation give rise to sediment or gum formation. As a result, the fuel can contribute to the corrosion and plugging of the filter pump. Antioxidants have been used in an effort to stabilize biodiesels, but there is still a need for a biodiesel composition with improved oxidation stability. In general, good fuel compositions should provide synergistic combinations of a biodiesel and antioxidants. Our work involved the synthesis of antioxidants to improve the oxidative stability of biodiesel fuel.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 추계학술대회논문집A
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• pp.299-303
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• 2001

Adherend-adhesive interface failure will occur on a macroscale when surface preparation or material quality are poor. It is well known that the stress singularity occurs at the edges of interface between the adhernds and the adhesive, and that crack will initiate from these positions. Also if bubbles are created and remained in the adhesive layer during the bonding process, the stress concentrates around these hole defects. In this paper, the effects of the hole defects on the SIF of interface crack were examined. From results, SIF increased with the hole defects near the interface crack and increased with an decreae in the upper adherend thickness, an increase in the center adhesive thickness.